chore(deps): update dependency mypy to v1.20.1 (#2839)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

requirements-dev.txt

@@ -1,4 +1,4 @@
-mypy==1.20.0
+mypy==1.20.1
 pre-commit==4.5.1
 pytest==9.0.3
 ruff==0.15.10